<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<div id="app">
    <div>{{msg}}</div>
    <button @click="reverseString">翻转字符串</button>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
<script>
    const app = new Vue({
        el: '#app',
        data: {
            msg: 'Hello World'
        },
        methods: {
            reverseString() {
                this.msg = this.msg.split('').reverse().join('');
                console.log(this.msg.split(''));
                console.log(this.msg.split('').reverse());
                console.log(this.msg.split('').reverse().join(''));

            }
        }
    });
</script>

<body>
</body>

</html>